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Table identification method

A recognition method and table technology, applied in the field of image recognition, to achieve the effect of improving operating efficiency and accuracy

Active Publication Date: 2020-01-03
正和智能网络科技(广州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to improve the existing form recognition method, perform inclination correction processing when recognizing the form image, and process shape distortion and uneven brightness, so as to improve the accuracy of form recognition

Method used

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It is only stated here that the words for directions such as up, down, left, right, front, back, inside, and outside that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific to the present invention. limited.

[0035] figure 1 Shown is the overall flowchart of the form recognition method of the present invention, including:

[0036] S101. Acquire an initial form image, and perform horizontal correction and vertical correction on the initial form image to generate a corrected form image.

[0037]The image of the corrected form is corrected horizontally and vertically, so that the tilt of the form image caused by the bending and folding of the form paper is corrected, a...

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Abstract

The invention discloses a table recognition method which comprises the following steps: acquiring an initial table image, and performing horizontal correction and vertical correction on the initial table image to generate a corrected table image; converting the correction table image into a grey-scale map, generating a grey-scale table image, and performing Gaussian adaptive binarization processing on the grey-scale table image to generate a foreground mask; performing corrosion operation and expansion operation on the foreground mask by adopting a method based on combined morphology to extract a table line, and generating a table foreground; searching the outline of the table foreground to generate a table area; and identifying the text image line of each table area by using a convolutional neural network, and outputting an identified character. By adopting the method, inclination correction processing is carried out when the table image is identified, and shape distortion and unevenbrightness are processed, so that the table identification accuracy is improved.

Description

technical field [0001] The invention relates to an image recognition technology, in particular to a form recognition method. Background technique [0002] Tables are common content for text. In the work, it is often necessary to convert the table in the picture into an editable file format. Manual entry is the easiest method, but it is inefficient and error-prone when dealing with large numbers of forms. At present, the more commonly used method is to use an image acquisition device to acquire the form image, then recognize the form image, and then output the recognized text content. [0003] The comparison document CN201310455065.0 discloses a form recognition method, which includes the following steps: parsing and analyzing the metadata information in the original layout document, extracting the basic graphic elements in the page; Segment the text line and obtain the segmented slice; construct an undirected graph for the segmented slice; extract the image in the page, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/32
CPCG06V30/413G06V30/414G06V30/1478
Inventor 程涛
Owner 正和智能网络科技(广州)有限公司
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